Re: [PATCH RFC net-next 0/2] hsr: Add additional info to send/ receive skbs

[Sebastian Andrzej Siewior <bigeasy@linutronix.de>]

On 2026-02-16 17:25:33 [+0100], Andrew Lunn wrote:
> > Is there a reason not to create and bind one socket directly to each of
> > the underlying slave interfaces, with a socket filter attached to only
> > receive the HSR+PTP packets you want?
> 
> I don't know HSR too well. But what you are suggesting is what is used
> when you have an 802.1 bridge on top of two or more
> interfaces. ptp4linux is configured to open the lower interfaces of
> the bridge and sends/receives frames out the ports as required. I
> _think_ it only works in L2 mode, since the ports don't have IP
> addresses of their own.
> 
> If HSR can be made to work in the same way, you might be able to avoid
> all the invasive changes.

The missing point is that I need occasionally to send packet with system
HSR/ PRP header on a specific slave interface. Otherwise this is what I
had in my initial PoC version (this and dropping PTP packets early in the
HSR stack before they get forwarded).

>     Andrew

Sebastian